Perfumed soap cake



April 13, 1926. 1,580,576 E. WEIDNER PERFUMED SOAP CAKE Filed March 9;1925 mwtw W M filled with special filling materials.

Patented Apr. 13,1926. UNITED STATES EDMUND wnnmm, or BERLIN, GERMANY.

PEBIUHED SOAP (JAKE.

Application filed larch 9, 1925. fserlal'li'o. 14,258.

To all whom it may concern:

Be it known that I, EDMUND \VEIDNER, citizen of Germany, residing atBerlin, in Prussia, Germany, have invented new and useful Improvementsin a Perfumed Soap Cake, of which the following is a specification.

This invention relates to soap cakes having one or more holes orchannels extending from one side of the-cake to the other ipid echaracteristic feature of the invention in first line is that thefilling mass for the channels contains such materials or substanceswhich, when directly mixed with the soap, would deteriorate or decomposesoon so that,'when these substances were incorporated in the soap massthe soap would not keep well. For instance there are existing perfumeswhich in themselves could be valuable for soaps but which are soondecomposed when admixed with the soap mass, especially by the alkali ofthe soap and thereby freed of their aroma. But. if perfumes of this kindare employed as const tuents of a consistent paste to be filled into thechannels extending through the soap cake the aroma of the soap ispermanently preserved. For instance the delicate perfumes produced inFrance from flowers by the so called enfleurage, and further perfumesproduced from pine-needles and fir-needles have to be used in the mannerdescribed above for producing scent ed soap. Also many medicaments andcos metics, which, when admixed with the soap are not lasting, can beunited with the soap cakes in the manner described so that they adnixwith the soap only when the soap is use In the manner described alsoseveral dif ferent substances, for instance a perfume and a medicamentmay be filled, separate from one another, in pasty state or the likeinto two or more separated channels of the soap cake. In this simplemanner substances'can be applied together and with the soap, which iwhen admixed with one another or with the soap mass, would be decomposedor altered.

Accordingto a preferred form of the invention a continuous channel ofsuitable di ameter is arranged inthe transverse direction in the midstof the soa cake, and this channel is subsequently fille with the pastymass. The filling mass must preferably of such consistency that, whenthe soap cake 1y be perceived, or it might be is used for washing, thefilling mass is not washed out of the channel but only sov much .of thefilling mass is consumed as will correspond to the consumed part of thesoap.

A stearin-crealn is preferably used as carrier for the perfumes and thelike. For instance this stearin-cream may be constituted as follows: 75grams of an alkali salt of laminaric acid, 1.5 kilos of water, 1 kilo ofstearin, 500 grams of glycerol, 500 grams of zinc oxide, 500 grains ofstarch. The hot watery solution of the salt of laminaric acid isemulsionized with the molten stearin and stirred until cooled. Then thezinc oxide and the starch are added and mixed therewith. The wholemixture is dried precautiously until the total weight will be about 3kilos. Finally the glycerol is added to the dried mixture. Fat or amixture of fat and wax might also be used for this purpose which behaveperfectly neutral with respect to sensitive oils or the like and give nocause for decomposition of them.

'iwo embodiments of .the invention are Shown on the accompanyingdrawings by way of example.

Fig. 1 shows a plan view of a soap cake according to the invention, Fig.2 the same soap cake in cross sectiomwithout the filling mass, Fig. 3 amodification in-cross section.

According to Figs. 1 and 2 the soap cake 1 has a central channel 2 inthe direction of its transverse axis. This channel 2 is filled with apasty mass 2" of suitable composition.

Fig. 3 shows a soap cake 1 in section which has two parallel transversechannels 3, 4 which may be filled separately with pasty masses ofdiffering composition.

- If a soap cake as shown is used for washing the hands a correspondingquantity of the pasty mass is rubbed on the skin together with the soapand this mass is inti1nately mixed with the soap .when the lather isproduced so that the perfume, the medicament or the like, acts on theskin together with the soap.

The core of pasty mass, which preferably has the shape of a stick, maybe of the same colour as the soap cake so that it can scarceof adifferent colour than the soap cake. The stick of pasty mass can alsobemarked on the end sions or the like.

be 'faces in anyconvenient manner by impres-i l The ends of the core ofpast mass in the soap may be covered, if desire with a protecting layerof a hard mass soluble in water, said mass consisting either of soap orof other convenient substances and serving for making harmless anundesired softeningof the pasty'mass when the soap cake is stored in'hot rooms. When the soap cakes prepared in the manner described aredesigned to be used in tropical countries or the like the transversechannels may also be closed by easily removable covers or capsules ofcelluloid or other suitable material the flange of the cover fittinginto the channels, Every time the soap cake is to be used these coyersor capsules have to be removed,

and they are put on again after the soap I cake has been used.

Having now particularly described and ascertained the nature of my saidinvention, I declare that what I claim is A perfumed soap cake withchannels extending from one side to the other of the soap cake, saidchannels being filled with paste-like mass, said paste like mass beingchemically indifferent towards perfumes,

and the perfume for the soap being incorporated in said indifferentmass.

In testimony whereof I have hereunto set my hand DR. EDMUND VVEIDNER.

